<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
Netty WebSocket 时间服务器
</head>
<br>
<body>
<br>
    <script type="text/javascript">
        var socket;
        if (!window.WebSocket) {
            window.WebSocket = window.MozWebSocket;
        }

        if (window.WebSocket) {
            socket = new WebSocket("ws://localhost:8765/websocket");

            socket.onmessage = function(event) {
                var ta = document.getElementById('responseText');
                ta.value="";
                ta.value = event.data
            };

            socket.onopen = function(event) {
                var ta = document.getElementById('responseText');
                ta.value = "打开WebSocket服务正常，浏览器支持WebSocket!";
            };

            socket.onclose = function(event) {
                var ta = document.getElementById('responseText');
                ta.value = "";
                ta.value = "WebSocket 关闭!";
            };
        } else {
            alert("抱歉，您的浏览器不支持WebSocket协议!");
        }

        function send(message) {
            if (!window.WebSocket) { return; }
            if (socket.readyState == WebSocket.OPEN) {
                socket.send(message);
            } else {
                  alert("WebSocket连接没有建立成功!");
            }
        }
</script>
<form onsubmit="return false;">
 <input type="text" name="message" value="Netty最佳实践"/>
<br><br>
 <input type="button" value="发送WebSocket请求消息" onclick="send(this.form.message.value)"/>
<hr color="blue"/>
<h3>服务端返回的应答消息</h3>
<textarea id="responseText" style="width:500px;height:300px;"></textarea>
</form>
</body>
</html>